"Medium" and "Fine" grit

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Jan 23, 2011
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Hi there. What grit sandpaper is considered "Medium" and "Fine?"
I would like to make some sharpening boards.
Thanks!
 
.honestly i go by an old rule of doubling the last grit (ie start at 100, 200, 400, etc) i find this helps with all sharpening processes, whether its re profiling or just a touch up. so the only numbers i care about are what you start at and what you want to end on
 
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to me, 600 is medium, 2000 is fine...tho I still want to go for something finer...BTW has anyone tried to sharpen s30v or d2 on aluminum oxide sandpaper? nightmare or a good night?
 
I consider anything below 400 to be 'coarse', then 400 - 800 to be 'medium' (varying degrees of a 'satin' finish), then 1000 and above to be 'fine' or better (varying degrees of a polished finish).
 
Yeah, for blades I'm going to agree with David here. Lot of it depends on exactly HOW fine of a finish you want on the blade. I've posted a chart that's floating around here somewhere that will let you compare sandpapers to sharpening stones and stropping compounds in terms of grit size, if you're interested in numbers.
 
It depends on one's frame of reference. (i.e., how "fast" is fast?)

I've heard individuals refer ro 320 as "fine" grit. Others will refer to it as "extra coarse."

I suppose your definition will depend, to a large extent, on the intended use of the product.
 
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